Basically, since the 1958-59 season, English football has had four top tiers. Prior to that, there were the first two divisions and two third divisions: a north division, and a south division. Since that season, of the 92 teams in those four divisions, between 11 and 14 of them have always been London-based teams.

This animation uses the places of those teams within the four tiers and the colours of those teams to create an animation. The longer a team is in a specific division, the closer to the edge of the circle that team is.